A sample of gas at 25.0°C has a volume of 9.00 L and exerts a pressure of 740, mm Hg. How many moles of gas are in the sample?

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

What material does not melt at any temperature